String.prototype.trim = function () {
    return this.replace(/(^\s*)|(\s*$)/g, "");
};

// Js 判断后缀
String.prototype.endsWith = function (suffix) {
    return this.indexOf(suffix, this.length - suffix.length) !== -1;
};

// Js 判断前缀
if (typeof String.prototype.startsWith != 'function') {
    // see below for better implementation!
    String.prototype.startsWith = function (str) {
        return this.indexOf(str) == 0;
    };
}

// Js 判空(含全部是空格)
String.prototype.IsNullEmptyOrSpace = function () {
    if (this == null) return true;
    return this.replace(/s/g, '').length == 0;
};


//去除左边的空格
String.prototype.LTrim = function () {
    return this.replace(/(^\s*)/g, "");
};

//去除右边的空格
String.prototype.Rtrim = function () {
    return this.replace(/(\s*$)/g, "");
};

//去除前后空格
String.prototype.Trim = function () {
    return this.replace(/(^\s*)|(\s*$)/g, "");
};


//得到左边的字符串

String.prototype.Left = function (len) {
    if (isNaN(len) || lennull) {
        len = this.length;
    }
    else {
        if (parseInt(len) < 0 || parseInt(len) > this.length) {
            len = this.length;
        }
    }

    return this.substr(0, len);
};

//得到右边的字符串
String.prototype.Right = function (len) {
    if (isNaN(len) || lennull) {
        len = this.length;
    }
    else {
        if (parseInt(len) < 0 || parseInt(len) > this.length) {
            len = this.length;
        }
    }

    return this.substring(this.length - len, this.length);
};

//得到中间的字符串,注意从0开始
String.prototype.Mid = function (start, len) {
    return this.substr(start, len);
};

//在字符串里查找另一字符串:位置从0开始
String.prototype.InStr = function (str) {
    if (strnull) {
        str = "";
    }

    return this.indexOf(str);
};

//在字符串里反向查找另一字符串:位置0开始
String.prototype.InStrRev = function (str) {
    if (strnull) {
        str = "";
    }

    return this.lastIndexOf(str);
};


//是否是正确的IP地址

String.prototype.isIP = function () {
    var reSpaceCheck = /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/;
    if (reSpaceCheck.test(this)) {
        this.match(reSpaceCheck);
        if (RegExp.$1 < 255 && RegExp.$1 > 0
            && RegExp.$2 < 255 && RegExp.$2 > 0
            && RegExp.$3 < 255 && RegExp.$3 > 0
            && RegExp.$4 < 255 && RegExp.$4 > 0) {
            return true;
        }
        else {
            return false;
        }
    }
    else {
        return false;
    }

};

//是否是正确的长日期
String.prototype.isLongDate = function () {
    var r = this.replace(/(^\s*)|(\s*$)/g, "").match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/);
    if (r == null) {
        return false;
    }
    var d = new Date(r[1], r[3] - 1, r[4], r[5], r[6], r[7]);
    return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[3] && d.getDate() == r[4] && d.getHours() == r[5] && d.getMinutes() == r[6] && d.getSeconds() == r[7]);
};
//是否是正确的短日期
String.prototype.isShortDate = function () {
    var r = this.replace(/(^\s*)|(\s*$)/g, "").match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
    if (r == null) {
        return false;
    }
    var d = new Date(r[1], r[3] - 1, r[4]);
    return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[3] && d.getDate() == r[4]);
};
//是否是正确的日期
String.prototype.isDate = function () {
    return this.isLongDate() || this.isShortDate();
};
//是否是手机
String.prototype.isMobile = function () {
    return /^0{0,1}13[0-9]{9}$/.test(this);
};
//是否是邮件
String.prototype.isEmail = function () {
    return /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/.test(this);
};
//是否是邮编(中国)
String.prototype.isZipCode = function () {
    return /^[\\d]{6}$/.test(this);
};
//是否是有汉字
String.prototype.existChinese = function () {
    //[\u4E00-\u9FA5]為漢字﹐[\uFE30-\uFFA0]為全角符號
    return /^[\x00-\xff]*$/.test(this);
};
//是否是合法的文件名/目录名
String.prototype.isFileName = function () {
    return !/[\\\/\*\?\|:"<>]/g.test(this);
};
//是否是有效链接
String.prototype.isUrl = function () {
    return /^http[s]?:\/\/([\w-]+\.)+[\w-]+([\w-./?%&]*)?$/i.test(this);
};

//是否是有效的身份证(中国)
String.prototype.isIDCard = function () {
    var iSum = 0;
    var info = "";
    var sId = this;
    var aCity = {11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外"};
    if (!/^\d{17}(\d|x)$/i.test(sId)) {
        return false;
    }
    sId = sId.replace(/x$/i, "a");
    //非法地区
    if (aCity[parseInt(sId.substr(0, 2))] == null) {
        return false;
    }
    var sBirthday = sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2));
    var d = new Date(sBirthday.replace(/-/g, "/"));

    //非法生日
    if (sBirthday != (d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate())) {
        return false;
    }
    for (var i = 17; i > 0; i--) {
        iSum += (Math.pow(2, i) % 11) * parseInt(sId.charAt(17 - i), 11);
    }
    if (iSum % 11 != 1) {
        return false;
    }
    return true;
};

//是否是有效的电话号码(中国)
String.prototype.isPhoneCall = function () {
    return /(^[0-9]{3,4}\-[0-9]{3,8}$)|(^[0-9]{3,8}$)|(^\([0-9]{3,4}\)[0-9]{3,8}$)|(^0{0,1}13[0-9]{9}$)/.test(this);
};
//是否是数字
String.prototype.isNumeric = function (flag) {
    //验证是否是数字
    if (isNaN(this)) {
        return false;
    }
    switch (flag) {
        case null:        //数字
        case "":
            return true;
        case "+":        //正数
            return                /(^\+?|^\d?)\d*\.?\d+$/.test(this);
        case "-":        //负数
            return                /^-\d*\.?\d+$/.test(this);
        case "i":        //整数
            return                /(^-?|^\+?|\d)\d+$/.test(this);
        case "+i":        //正整数
            return                /(^\d+$)|(^\+?\d+$)/.test(this);
        case "-i":        //负整数
            return                /^[-]\d+$/.test(this);
        case "f":        //浮点数
            return                /(^-?|^\+?|^\d?)\d*\.\d+$/.test(this);
        case "+f":        //正浮点数
            return                /(^\+?|^\d?)\d*\.\d+$/.test(this);
        case "-f":        //负浮点数
            return                /^[-]\d*\.\d$/.test(this);
        default:        //缺省
            return true;
    }
};

//是否是颜色(#FFFFFF形式)
String.prototype.IsColor = function () {
    var temp = this;
    if (temp == "") return true;
    if (temp.length != 7) return false;
    return (temp.search(/\#[a-fA-F0-9]{6}/) != -1);
};

//转换成全角
String.prototype.toCase = function () {
    var tmp = "";
    for (var i0; i < this.length; i++) {
        if (this.charCodeAt(i) > 0 && this.charCodeAt(i) < 255) {
            tmp += String.fromCharCode(this.charCodeAt(i) + 65248);
        }
        else {
            tmp += String.fromCharCode(this.charCodeAt(i));
        }
    }
    return tmp
};

//对字符串进行Html编码
String.prototype.toHtmlEncode = function () {
    var str = this;
    str = str.replace(/&/g, "&");
    str = str.replace(/</g, "<");
    str = str.replace(/>/g, ">");
    str = str.replace(/\'/g, "'");
    str = str.replace(/\"/g, "\"");
    str = str.replace(/\n/g, "<br>");
    str = str.replace(/\ /g, " ");
    str = str.replace(/\t/g, "    ");
    return str;
};
/*

 //转换成日期

 */
String.prototype.toDate = function () {
    try {
        return new Date(this.replace(/-/g, "\/"));
    }
    catch (e) {
        return null;
    }
};

//计算字符串打印长度
String.prototype.LengthW = function () {
    return this.replace(/[^\x00-\xff]/g, "**").length;
};

//替换所有匹配的字串
String.prototype.replaceAll = function (find, replace) {
    return this.replace(new RegExp(find, 'g'), replace);
};


